Designated router assignment per multicast group address/range

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 7911977
APP PUB NO 20060268869A1
SERIAL NO

11140856

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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Each of several routers connected to a LAN elects the same router as the designated router for a multicast group identified by a multicast address. Each of the several routers implements a method for electing the designated router. The method includes in one embodiment, generating several values corresponding to the several routers, respectively. The several values are generated as a function of the several routers' IP addresses, respectively, and an IP address of a first multicast group. The values, in one embodiment, are then compared to determine which is the largest. Thereafter each router elects as the designated router for the multicast group, the router corresponding to the largest value.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
CISCO TECHNOLOGY, INC.SAN JOSE, CA14149

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Boers, Arjen Calafell, ES 45 919
Wijnands, Ijsbrand Leuven, BE 82 1068

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
* 2005/0149,531 Method and apparatus for routing data to a load balanced server using MPLS packet labels 73 2005
 
NOKIA SIEMENS NETWORKS OY (1)
* 7310335 Multicast routing in ad-hoc networks 78 2000
 
QUALCOMM INCORPORATED (2)
* 6633765 Method and apparatus for performing coverage control for multicast services in a wireless network 42 2000
* 2008/0151,808 ENABLING FOREIGN NETWORK MULTICASTING FOR A ROAMING MOBILE NODE, IN A FOREIGN NETWORK, USING A PERSISTENT ADDRESS 17 2008
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
* 6507863 Dynamic multicast routing facility for a distributed computing environment 36 1999
 
TTI INVENTIONS A LLC (1)
* 2002/0150,094 Hierarchical level-based internet protocol multicasting 301 2001
 
RPX CLEARINGHOUSE LLC (2)
* 6631420 Reducing convergence time by a protocol independent multicast (PIM) router 29 1999
* 6707796 System device and method for reducing forwarding states in a communication system 33 1999
 
CISCO TECHNOLOGY, INC. (3)
* 6847638 Multicast system for forwarding desired multicast packets in a computer network 50 2000
* 2006/0018,253 System and method for preserving multicast data forwarding during control failures in a router 66 2004
* 2006/0268,869 Designated router assginment per multicast group address/range 26 2005
 
ALCATEL LUCENT (1)
* 2006/0262,792 Co-existing static and dynamic IP multicast 22 2005
 
MICROSOFT TECHNOLOGY LICENSING, LLC (1)
* 7013469 Application program interface for network software platform 173 2005
 
HUAWEI TECHNOLOGIES CO., LTD. (1)
* 2004/0071,137 Method for forwarding multicast message in network communication 6 2003
 
NORTEL NETWORKS LIMITED (1)
* 6791980 System, device, and method for reducing the number of multicast routes maintained in a multicast routing information base 23 1999
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
INFOBLOX INC. (1)
* 9025494 IPv6 network device discovery 0 2012
 
CISCO TECHNOLOGY, INC. (3)
* 9071546 Protocol independent multicast designated router redundancy 0 2011
* 2012/0294,308 Protocol independent multicast designated router redundancy 4 2011
* 2015/0249,594 PROTOCOL INDEPENDENT MULTICAST DESIGNATED ROUTER REDUNDANCY 0 2015
* Cited By Examiner

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